123112213130 has 32 divisors (see below), whose sum is σ = 239629694976. Its totient is φ = 45361993984.

The previous prime is 123112213099. The next prime is 123112213153. The reversal of 123112213130 is 31312211321.

It is a happy number.

It is a super-3 number, since 3×123112213130³ (a number of 34 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7696154 + ... + 7712133.

It is an arithmetic number, because the mean of its divisors is an integer number (7488427968).

Almost surely, 2^123112213130 is an apocalyptic number.

123112213130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123112213130 is a deficient number, since it is larger than the sum of its proper divisors (116517481846).

123112213130 is a wasteful number, since it uses less digits than its factorization.

123112213130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15408358.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 123112213130 its reverse (31312211321), we get a palindrome (154424424451).

The spelling of 123112213130 in words is "one hundred twenty-three billion, one hundred twelve million, two hundred thirteen thousand, one hundred thirty".